diff --git a/src/dom/parse.js b/src/dom/parse.js
index f7868f94..91e5aea3 100644
--- a/src/dom/parse.js
+++ b/src/dom/parse.js
@@ -213,6 +213,7 @@ wysihtml5.dom.parse = (function() {
         addClass            = rule.add_class,             // add classes based on existing attributes
         setAttributes       = rule.set_attributes,        // attributes to set on the current node
         checkAttributes     = rule.check_attributes,      // check/convert values of attributes
+        allowAttributes     = rule.allow_attributes,      // copy attributes from old to new node
         allowedClasses      = currentRules.classes,
         i                   = 0,
         classes             = [],
@@ -231,6 +232,17 @@ wysihtml5.dom.parse = (function() {
       attributes = wysihtml5.lang.object(setAttributes).clone();
     }
     
+    if (allowAttributes) {
+    	allowAttributesLength = allowAttributes.length;
+    	for (i = 0; i<allowAttributesLength; i++) {
+    		attributeName = allowAttributes[i];
+    		newAttributeValue = _getAttribute(oldNode, attributeName);
+    		if (typeof(newAttributeValue) === "string") {
+    			attributes[attributeName] = newAttributeValue;
+    		}
+    	}
+    }
+    
     if (checkAttributes) {
       for (attributeName in checkAttributes) {
         method = attributeCheckMethods[checkAttributes[attributeName]];
@@ -270,9 +282,9 @@ wysihtml5.dom.parse = (function() {
       classes = classes.concat(oldClasses.split(WHITE_SPACE_REG_EXP));
     }
     classesLength = classes.length;
-    for (; i<classesLength; i++) {
+    for (i = 0; i<classesLength; i++) {
       currentClass = classes[i];
-      if (allowedClasses[currentClass]) {
+      if (allowedClasses[currentClass] || allowedClasses['*']) {
         newClasses.push(currentClass);
       }
     }